1940
Gardner & Borr
1945
Kilsdeth
1950-1953
Industrial Research Agency carried out drilling
exploration of (3) lode
claims in the area.
Previous mining operation around Capacuan was
undertaken by the Phil. Iron Mines.
1953
Santos Yņigo
1957-1963
Mitsubishi Company of Japan conducted drilling and
geological study
of 15 leased mining claims in the Dawahan area.
1959
Frost
1962
(June to August) Mitsubishi Company of Japan
conducted drilling at Capacuan,
1964-1965
Detailed geological mapping, ground magnetic
surveys and drilling activities
were undertaken by geologists of the Philippine Iron
Mines at the Dawahan
area.
1968
Caleon et, al, conducted ground magnetic
surveys around this area as a
follow-up work on the magnetic anomalies delineated by
the aeromagnetic
survey of Hunting Geophysics of London in 1954.
